How to fix flex bent after reflow

#88511

How to fix flex bent after reflow | 26 October, 2022

Hello colleagues, I have a very long flex assembly that I run on a SMT carrier by bending assembly in the middle. This crates a curve after reflow, which I want to get rid if. Any ideas.

Attachments:

IMG_20221018_101221405.jpg [3.6M]

#88525

How to fix flex bent after reflow | 27 October, 2022

so you bend it to go in? Can you not let it lay flat? We run flex on carriers, but nothing that large. We also run 48inch long boards, but they are aluminum.

#88530

How to fix flex bent after reflow | 27 October, 2022

I don't have equipment that can handle this size of a board. Do you see any challenges on printing 48" board?

#88531

How to fix flex bent after reflow | 27 October, 2022

My printer handles 1500mm stencil, so no, 4 ft boards print ok. If you are bending the board for the oven, does that mean your printer and PnP handle the full length?

DWL

#88539

How to fix flex bent after reflow | 28 October, 2022

Hire a fat guy to sit on them. My rates are very reasonable if you'd like a quote...

#88540

How to fix flex bent after reflow | 31 October, 2022

:) Yes, I was thinking on this too. Still looking for other options though.

#88541

How to fix flex bent after reflow | 31 October, 2022

It travels on the SMT carrier bent through all he process.

#88545

How to fix flex bent after reflow | 31 October, 2022

Can you share a photo of this board on a carrier? I'm havinga hard time picturing this?

Stephen

#88548

How to fix flex bent after reflow | 31 October, 2022

Are you calibrated to NIST traceable standards?

#88560

How to fix flex bent after reflow | 1 November, 2022

This is the concept

Attachments:

Angela T

#88562

How to fix flex bent after reflow | 2 November, 2022

How long is the whole strip? Also, what type of pick and place machine are you using?

Angela T

#88563

How to fix flex bent after reflow | 2 November, 2022

Bend it for mounting，if it can't be mounted by bending assembly. you can choose other pick and place machine which can handle this flex pcb. How long is this flex board? And do you use jigs when reflow? Could you please send a picture of the jig you use?

#88567

How to fix flex bent after reflow | 2 November, 2022

Is the BLUE area the only place where parts are located? That is a very interesting concept. Why do they NEED to be flattened? Do they ship flattened, or are they installed flat? I assume that the use of flex is because the actual application requires the board to "bend around the corner". If you ship these, I assume they are curled up in the box?

ibtonystark

#88590

How to fix flex bent after reflow | 4 November, 2022

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Eric Jack

#88870

How to fix flex bent after reflow | 20 January, 2023

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PCBSINO

#88875

How to fix flex bent after reflow | 21 January, 2023

perhaps we can help you for this SMT and THT part soldering problem, better not bend it not too hard.

Electronic manufacturing pcbsino.com